java.lang.IllegalStateException: Could not find a method saveData(View) in the activity class com.example.giuse.secondly.NewSheet for onClick handler on view class android.widget.Button with id 'button_save' at android.view.View$1.onClick(View.java:4007) at android.view.View.performClick(View.java:4780) at android.view.View$PerformClick.run(View.java:19866) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5254) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)

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via Google Groups by Giuseppe Guarino, 1 year ago
Could not find a method saveData(View) in the activity class com.example.giuse.secondly.NewSheet for onClick handler on view class android.widget.Button with id 'button_save' at android.view.View$1.onClick(View.java:4007) at
via Stack Overflow by cycun
, 1 year ago
Could not execute method of the activity com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:901)
via Stack Overflow by Balaraju M
, 1 month ago
You need to use a Theme.AppCompat theme (or descendant) with this activity.
java.lang.IllegalStateException: Could not find a method saveData(View) in the activity class com.example.giuse.secondly.NewSheet for onClick handler on view class android.widget.Button with id 'button_save' at android.view.View$1.onClick(View.java:4007) at android.view.View.performClick(View.java:4780) at android.view.View$PerformClick.run(View.java:19866) at android.os.Handler.handleCallback(Handler.java:739) at android.os.Handler.dispatchMessage(Handler.java:95) at android.os.Looper.loop(Looper.java:135) at android.app.ActivityThread.main(ActivityThread.java:5254) at java.lang.reflect.Method.invoke(Native Method) at java.lang.reflect.Method.invoke(Method.java:372) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)

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